Catchable fatal error in formatting.php

I had the same issue and I cleaned the content of the row called theme_mods_YOURTHEMENAME (into the table wp-options)

I copy/past the content I had with a previous backup.

Now it works well.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)